Valve chest



S. DEAN VALVE CHEST April 2, 1929.

Filed May 14, 1927 7k??'//77/7/2713""l 3L /X INVENTOR v SrL/mer DEH/v,

Patented Apr. 2, 1929.

intere UNITED STATES PArsNT OFFICE. y

S'J'UAIt'illl DEAN, OF INDIANAPOLIS, INDIANA, ASS'NOR TO DEAN BROTHERS CO'lYL PANY, 0F INDIANAPOLIS,

vnnvn Application filed May 14,

rlhis invention relates to a valvechest for pumps and process of orinin the same.

The chief obi ect of the invention is to form a valvechest body with a plurality of chainbers cross-connected with an intatte port com-` niuni ating with one of said chambers all Without the use of cores or plugging and with the minimum amount of drilling.

rlhe chief :feature of the invention consists in the formation of a valvechest body having a plurality of chambers intercommunicating by z` lateral channel, an intake to one cham ber, and outlet from the other chamber, said chambers being separated by a partition with the included passages mentioned being` formed as indicated.

Another chief feature of the invention consists of the process of formimgl a valvechest body ofthe character indicated.

rlhe full nature of the invention will be understood from the aecompanyingl drawings and the following; description and claims.

ln the drawings 1 is a perspective of one face of the pump body showing' the in* take passages and the crosscounceline` cbannel. Fig. 2 is a perspective view ofthe opposite face showing;- the two valve chambers. Fig. 3 shows one step in the process of formingr the pump body Without the use of cores. Fie'. l shows a similar view of a subsequent step in the process.

ln the drawings indicates a peripheral Wall united by a partition 11 and having a base 12, thereby forming a pair of chambers 13 and 1li- The base 12 is formed of sufficient thickness to include a lateral groove or recess 15 and an intake passage 1G is also provides The valvechest body has a pair of parallel. faces 17 and 18 so as to cooperate with suitable `gasket means and other :mechanism of a pump. Intake 16, by means of a drilled hole 19, communicates with chamber 13 and by the drilled hole 20, Asaid chambercommunh eates Wit-h the passage 15 in turn communica tin p; by drilled hole 21 with the chamber lll, said latter chamber having the discharge opening; 22. In the chambers 1land 13 the holes 21 and 19 are suitably faced as at an d 2d respectively. This facing is a bevel and forms a valve seat.

The action of the pump is as follo s:

Thru suitable mechanism a valve controlling opening 19 is elevated from seat 211 and umana, .a conronarreu.

onnsr.

1927. llral No. 191,476.

air passes thru the intalie 1.6 and the chamber` 13. The air escapes tl'ierei'rom when the valve returned tothe seat @L1 and the valve controlling; opening,` 21 is elevated from seat 23, and said air is discharged into chamber` 1d where it is trapped therein by the valve returning" to the seat 9,3 for subsequent disl charge for example by Way of the openinpl 22. The cycle is repeated for supplying air in chamber 13 and thence to chamber 14E as aforesaid. In order to mount the valvechest body, a centerii f' portion 25 `is provided and pair of oppositely extending sockets 26 is also provided.

There is noth'ull new in the pump operation and the invention consists primarily in the valvechest body per se and. the method of il'ormingv the same, Which is as follows: y

In Fig. 3,27 indicates the match plate having;` the cope portieri of the pattern 28 thereon and the flask portion 29, each being receivable by the cope B0 and drag 31 re spectively, the whole bcinp,- supported by the bottoni board Cope and drag are .filled with green sand and the parting 33 is formed when the pattern is removed from the mold, leaving the respective outlines in the cope and dra@` which the metal thereafter lille. The intake is formed. by projection 8st of the green sand mold and the cross-connecting or lateral passage 1F is formed by the projection 35 of the green sand mold while the two chambers lll and 13 are formed respectively by the projections 36 and 37 of the green sand mold, the latter being` formed in the drag and the first being; formed in the cope, as herein shown. llhen the casting is completed the passages l5 and 16 and chambers lll and 13 are formed therein Without the necessity of drilling; and plugging, which heretofore has been the method of forming a valvechest body of this general character, or by Corine; to obtain Said passages. After the casting,` has been formed, one of the faces 12 is ground flat on a grinder or lap Wheel and then the casting),` can be machined upon its opposite face so that the tivo faces 17 and 18 are substantially parallel. ,After this has been performed, the c sting` can be placed in a and the four holes 19, 20, 21 and 22 drilled individually or simultaneously and then the tivo holes 19 and 21 are beveled in the chambers 18 and lll respectively, thereby forining the valve seats 24 and 23 respectively and completing the formation of the valveehest body.

The invention claimed is: l. A vvalve chest lmember for a punip 1neludlng a pair of open-faced chambers in one vaee of the body and arranged in parallel v chamberforming and separating wall with a pair of transverse passages therein, one for V'each of the rst mentioned chambers and communicating with the v.elongated chamber forming passageway for Cross connecting the two first mentioned chambers, said wall havinganother pair of transverse passages therein, one for eaeh of said first mentioned chambers, and a laterally directed open-faced passageway in the body face opposite the face including said two irst mentioned ehan'lbers and extending from one or', the last mentioned passageways to the side of said body and forming` a side opening therein.

2. A device as defined by elaiin l eharacterized by the termination of one of eaeh of the Central wall passageway/'S in each chainber and eonnnunieating directly with the open-faced passageways, including a beveled seat opening into the communieating` chamber.

In witness whereof, I have hereunto aliixed my signature.

STUART DEAN. 

